<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script>
        let obj = {
            "name": "jack",
            "url": "www.haha.com"
        };
        let obj1 = JSON.stringify(obj)

        console.log(JSON.stringify(obj)); // ajax格式
        console.log(JSON.parse(obj1)); // 转回来js格式
    </script>
</body>

</html>